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3 years ago

I honestly don’t know how to do this! Please help

Mathematics

2 answers:

Darya [45]3 years ago

6 0

0
G of x is the same thing as y= so find 7 on the y axis and wherever it lines up that’s the answer I think

vlada-n [284]3 years ago

5 0

0 I hope that this helps

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Joe is 5 years older than Sydney. The sum of their ages is 45. What is Sydney’s age?

sweet-ann [11.9K]

Answer:

20 years old

Step-by-step explanation:

Joe = J

Sydney = S

J = 5 + S

J + S = 45

Substitute

5 + S + S = 45

Add

5 + 2S = 45

Subtract 5 from both sides of the equation

2S = 40

Divide both sides of the equation by 2

S = 20

Sydney is 20 years old

Hope this helps :)

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3 years ago

What are the solutions of the quadratic equation? 4x^2+34x+60=0

insens350 [35]

Answer:

Option 3) -6,-5/2

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$4x^{2} +34x+60=0$

$a=4\\b=34\\c=60$

substitute in the formula

$x=\frac{-34(+/-)\sqrt{34^{2}-4(4)(60)}} {2(4)}$

$x=\frac{-34(+/-)\sqrt{196}} {8}$

$x=\frac{-34(+/-)14} {8}$

$x_1=\frac{-34(+)14} {8}=-\frac{20}{8}=-\frac{5}{2}$

$x_2=\frac{-34(-)14} {8}=-6$

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3 years ago

Work out 77 % of 775.66 m Give your answer rounded to 2 DP.

Zinaida [17]

Answer:

597.25 m

Step-by-step explanation:

We need to find 77% of 775.66 m.

It can be calculated as follows :

$77\%\times 775.66\\\\=\dfrac{77}{100}\times 775.66\\\\=597.25\ m$

So, 77% of 775.66 m is equal to 597.25 m.

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3 years ago

A volcanic plug shaped like a cone has a diameter of 24 km and a height of 3 km.

oee [108]

The answer is 452.39 because volume equals the height times radius times pie squard

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4 years ago

When a number is stated as a percentage, it means that number represents a portion of

dedylja [7]

100. Percent means out of hundred, so one percent means one out of a hundred, two percent means two out of a hundred, etc.

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3 years ago